Even if you prefer to go solo, it's a good idea to try running with others from time to time. When you know someone is waiting for you, you're not as likely to skip that day's workout at the last minute. Plus, you can venture farther afield and at odder hours than you'd feel comfortable doing alone. You can challenge yourself with your fitter friends on days when you want a harder workout, and hook up with your slower friends on other days. Don't know other beginners? Check out our online community at runnersworld.com/thestartingline, where you'll find regional groups and forums.